Adding upstream version 0.7.0+dfsg.
Signed-off-by: Daniel Baumann <daniel@debian.org>
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33
cmd/gclip-gui/AndroidManifest.xml
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33
cmd/gclip-gui/AndroidManifest.xml
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<?xml version="1.0" encoding="utf-8"?>
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<!--
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Copyright 2021 The golang.design Initiative Authors.
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All rights reserved. Use of this source code is governed
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by a MIT license that can be found in the LICENSE file.
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Written by Changkun Ou <changkun.de>
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-->
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<manifest
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xmlns:android="http://schemas.android.com/apk/res/android"
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package="design.golang.clipboard.gclip"
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android:versionCode="1"
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android:versionName="1.0">
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<!-- In order to access the clipboard, the application manifest must
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specify the permission requirement. See the following page for
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details.
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http://developer.android.com/guide/topics/manifest/manifest-intro.html#perms -->
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<uses-permission android:name="android.permission.CLIPBOARD" />
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<application android:label="gclip" android:debuggable="true">
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<activity android:name="org.golang.app.GoNativeActivity"
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android:label="Gclip"
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android:configChanges="orientation|keyboardHidden">
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<meta-data android:name="android.app.lib_name" android:value="Gclip" />
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<intent-filter>
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<action android:name="android.intent.action.MAIN" />
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<category android:name="android.intent.category.LAUNCHER" />
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</intent-filter>
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</activity>
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</application>
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</manifest>
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31
cmd/gclip-gui/README.md
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31
cmd/gclip-gui/README.md
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# gclip-gui
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This is a very basic example for verification purpose that demonstrates
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how the [golang.design/x/clipboard](https://golang.design/x/clipboard)
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can interact with macOS/Linux/Windows/Android/iOS system clipboard.
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The gclip GUI application writes a string to the system clipboard
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periodically then reads it back and renders it if possible.
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Because of the system limitation, on mobile devices, only string data is
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supported at the moment. Hence, one must use clipboard.FmtText. Other supplied
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formats result in a panic.
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This example is intentded as cross platform application. To build it, one
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must use [gomobile](https://golang.org/x/mobile). You may follow the instructions
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provided in the [GoMobile wiki](https://github.com/golang/go/wiki/Mobile) page.
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- For desktop: `go build -o gclip-gui`
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- For Android: `gomobile build -v -target=android -o gclip-gui.apk`
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- For iOS: `gomobile build -v -target=ios -bundleid design.golang.gclip-gui.app`
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## Screenshots
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| macOS | iOS | Windows | Android | Linux |
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|:-----:|:---:|:-------:|:-------:|:-----:|
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## License
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MIT | © 2021 The golang.design Initiative Authors, written by [Changkun Ou](https://changkun.de).
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239
cmd/gclip-gui/main.go
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239
cmd/gclip-gui/main.go
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// Copyright 2021 The golang.design Initiative Authors.
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// All rights reserved. Use of this source code is governed
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// by a MIT license that can be found in the LICENSE file.
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//
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// Written by Changkun Ou <changkun.de>
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//go:build android || ios || linux || darwin || windows
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// +build android ios linux darwin windows
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// This is a very basic example for verification purpose that
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// demonstrates how the golang.design/x/clipboard can interact
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// with macOS/Linux/Windows/Android/iOS system clipboard.
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//
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// The gclip GUI application writes a string to the system clipboard
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// periodically then reads it back and renders it if possible.
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//
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// Because of the system limitation, on mobile devices, only string
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// data is supported at the moment. Hence, one must use clipboard.FmtText.
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// Other supplied formats result in a panic.
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//
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// This example is intentded as cross platform application.
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// To build it, one must use gomobile (https://golang.org/x/mobile).
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// You may follow the instructions provided in the GoMobile's wiki page:
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// https://github.com/golang/go/wiki/Mobile.
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//
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// - For desktop:
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//
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// go build -o gclip-gui
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//
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// - For Android:
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//
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// gomobile build -v -target=android -o gclip-gui.apk
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//
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// - For iOS:
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//
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// gomobile build -v -target=ios -bundleid design.golang.gclip-gui.app
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//
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package main
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import (
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"fmt"
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"image"
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"image/color"
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"log"
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"os"
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"sync"
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"time"
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"golang.design/x/clipboard"
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"golang.org/x/image/font"
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"golang.org/x/image/font/basicfont"
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"golang.org/x/image/math/fixed"
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"golang.org/x/mobile/app"
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"golang.org/x/mobile/event/lifecycle"
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"golang.org/x/mobile/event/paint"
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"golang.org/x/mobile/event/size"
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"golang.org/x/mobile/exp/gl/glutil"
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"golang.org/x/mobile/geom"
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"golang.org/x/mobile/gl"
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)
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type Label struct {
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sz size.Event
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images *glutil.Images
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m *glutil.Image
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drawer *font.Drawer
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mu sync.Mutex
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data string
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}
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func NewLabel(images *glutil.Images) *Label {
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return &Label{
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images: images,
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data: "Hello! Gclip.",
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drawer: nil,
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}
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}
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func (l *Label) SetLabel(s string) {
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l.mu.Lock()
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defer l.mu.Unlock()
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l.data = s
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}
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const (
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fontWidth = 5
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fontHeight = 7
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lineWidth = 100
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lineHeight = 120
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)
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func (l *Label) Draw(sz size.Event) {
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l.mu.Lock()
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s := l.data
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l.mu.Unlock()
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imgW, imgH := lineWidth*basicfont.Face7x13.Width, lineHeight*basicfont.Face7x13.Height
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if sz.WidthPx == 0 && sz.HeightPx == 0 {
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return
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}
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if imgW > sz.WidthPx {
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imgW = sz.WidthPx
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}
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if l.sz != sz {
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l.sz = sz
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if l.m != nil {
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l.m.Release()
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}
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l.m = l.images.NewImage(imgW, imgH)
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}
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// Clear the drawing image.
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for i := 0; i < len(l.m.RGBA.Pix); i++ {
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l.m.RGBA.Pix[i] = 0
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}
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l.drawer = &font.Drawer{
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Dst: l.m.RGBA,
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Src: image.NewUniform(color.RGBA{0, 100, 125, 255}),
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Face: basicfont.Face7x13,
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Dot: fixed.P(5, 10),
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}
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l.drawer.DrawString(s)
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l.m.Upload()
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l.m.Draw(
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sz,
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geom.Point{X: 0, Y: 50},
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geom.Point{X: geom.Pt(imgW), Y: 50},
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geom.Point{X: 0, Y: geom.Pt(imgH)},
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l.m.RGBA.Bounds(),
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)
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}
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func (l *Label) Release() {
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if l.m != nil {
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l.m.Release()
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l.m = nil
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l.images = nil
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}
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}
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// GclipApp is the application instance.
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type GclipApp struct {
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app app.App
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ctx gl.Context
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siz size.Event
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images *glutil.Images
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l *Label
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counter int
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}
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// WatchClipboard watches the system clipboard every seconds.
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func (g *GclipApp) WatchClipboard() {
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go func() {
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tk := time.NewTicker(time.Second)
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for range tk.C {
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// Write something to the clipboard
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w := fmt.Sprintf("(gclip: %d)", g.counter)
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clipboard.Write(clipboard.FmtText, []byte(w))
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g.counter++
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log.Println(w)
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// Read it back and render it, if possible.
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data := clipboard.Read(clipboard.FmtText)
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if len(data) == 0 {
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continue
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}
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// Set the current clipboard data as label content and render on the screen.
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r := fmt.Sprintf("clipboard: %s", string(data))
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g.l.SetLabel(r)
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g.app.Send(paint.Event{})
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}
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}()
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}
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func (g *GclipApp) OnStart(e lifecycle.Event) {
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g.ctx, _ = e.DrawContext.(gl.Context)
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g.images = glutil.NewImages(g.ctx)
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g.l = NewLabel(g.images)
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g.app.Send(paint.Event{})
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}
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func (g *GclipApp) OnStop() {
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g.l.Release()
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g.images.Release()
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g.ctx = nil
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}
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func (g *GclipApp) OnSize(size size.Event) {
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g.siz = size
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}
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func (g *GclipApp) OnDraw() {
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if g.ctx == nil {
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return
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}
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defer g.app.Send(paint.Event{})
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defer g.app.Publish()
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g.ctx.ClearColor(0, 0, 0, 1)
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g.ctx.Clear(gl.COLOR_BUFFER_BIT)
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g.l.Draw(g.siz)
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}
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func init() {
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err := clipboard.Init()
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if err != nil {
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panic(err)
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}
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}
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func main() {
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app.Main(func(a app.App) {
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gclip := GclipApp{app: a}
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gclip.app.Send(size.Event{WidthPx: 800, HeightPx: 500})
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gclip.WatchClipboard()
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for e := range gclip.app.Events() {
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switch e := gclip.app.Filter(e).(type) {
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case lifecycle.Event:
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switch e.Crosses(lifecycle.StageVisible) {
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case lifecycle.CrossOn:
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gclip.OnStart(e)
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case lifecycle.CrossOff:
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gclip.OnStop()
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os.Exit(0)
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}
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case size.Event:
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gclip.OnSize(e)
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case paint.Event:
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gclip.OnDraw()
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}
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}
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})
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}
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