增加屏幕截取简单示例

80e63b6b · yanghye · 26cf1667 · 80e63b6b · 80e63b6b
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example/screenshot/resources/index.html example/screenshot/resources/index.html +15 -0

example/screenshot/screenshot.go example/screenshot/screenshot.go +91 -0

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--- a/example/screenshot/resources/index.html
+++ b/example/screenshot/resources/index.html
+<!doctype html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <title>screenshot</title>
+</head>
+<body>
+<button onclick="screenshot()">截屏</button>
+<script>
+    function screenshot() {
+        ipc.emit("screenshot");
+    }
+</script>
+</body>
+</html>
--- a/example/screenshot/screenshot.go
+++ b/example/screenshot/screenshot.go
+package main
+
+import (
+	"embed"
+	"github.com/energye/energy/v2/cef"
+	"github.com/energye/energy/v2/cef/ipc"
+	"github.com/energye/energy/v2/consts"
+	"github.com/energye/golcl/lcl"
+	"github.com/energye/golcl/lcl/rtl"
+	"github.com/energye/golcl/lcl/types"
+	"path/filepath"
+)
+
+//go:embed resources
+var resources embed.FS
+
+func main() {
+	//Global initialization must be called
+	cef.GlobalInit(nil, &resources)
+	//Create an application
+	app := cef.NewApplication()
+	//Local load resources
+	cef.BrowserWindow.Config.LocalResource(cef.LocalLoadConfig{
+		ResRootDir: "resources",
+		FS:         &resources,
+	}.Build())
+	cef.BrowserWindow.Config.Width = 600
+	cef.BrowserWindow.Config.Height = 400
+	// run main process and main thread
+	cef.BrowserWindow.SetBrowserInit(browserInit)
+	//run app
+	cef.Run(app)
+}
+
+// run main process and main thread
+func browserInit(event *cef.BrowserEvent, window cef.IBrowserWindow) {
+	var (
+		schotForm *lcl.TForm
+		image     *lcl.TImage
+	)
+	if window.IsLCL() {
+		// 创建一个窗口显示截屏图片
+		schotForm = lcl.NewForm(window.AsLCLBrowserWindow().BrowserWindow())
+		// 窗口透明
+		schotForm.SetAlphaBlend(true)
+		// 无边框窗口
+		//schotForm.SetBorderStyle(types.BsNone)
+		// 窗口透明度
+		//schotForm.SetAlphaBlendValue(155)
+		// 窗口大小是整个显示器大小
+		//schotForm.SetBoundsRect(window.AsLCLBrowserWindow().BrowserWindow().Monitor().BoundsRect())
+		// 显示截屏图片
+		image = lcl.NewImage(schotForm)
+		image.SetParent(schotForm)
+		image.SetAlign(types.AlClient)
+		// 可以使用一些事件来处理截图.
+		image.SetOnMouseMove(func(sender lcl.IObject, shift types.TShiftState, x, y int32) {
+
+		})
+		image.SetOnMouseDown(func(sender lcl.IObject, button types.TMouseButton, shift types.TShiftState, x, y int32) {
+
+		})
+		image.SetOnMouseUp(func(sender lcl.IObject, button types.TMouseButton, shift types.TShiftState, x, y int32) {
+
+		})
+	}
+	// 屏幕截图
+	ipc.On("screenshot", func() {
+		println("screenshot")
+		window.RunOnMainThread(func() {
+			dc := rtl.GetDC(0)
+			// 一定要释放
+			defer rtl.ReleaseDC(0, dc)
+
+			// 位图
+			bmp := lcl.NewBitmap()
+			defer bmp.Free()
+			bmp.LoadFromDevice(dc)
+
+			// 可以 保存到本地 bmp
+			wd := consts.CurrentExecuteDir
+			bmp.SaveToFile(filepath.Join(wd, "sc.bmp"))
+
+			// 可以 显示截屏图片窗口
+			if schotForm != nil {
+				schotForm.Show()
+				image.Picture().Assign(bmp)
+			}
+		})
+	})
+}