feat(display): pdf support

display/pkg/main.go

@@ -47,20 +47,33 @@ func GetDeviceMac() (string, error) {
 	return "", fmt.Errorf("no suitable MAC address found")
 }
 
+var runningHelpProgram *exec.Cmd = nil
+
 func OpenPresentation(path string) error {
 	tempDirPath, err := os.MkdirTemp("", "plg-mudics-libreoffice-profile-")
 	if err != nil {
 		return fmt.Errorf("failed to create temporary profile directory: %w", err)
 	}
 
-	cmd := exec.Command("soffice", "--show", path, "--nologo", "--norestore", fmt.Sprintf("-env:UserInstallation=file:///%s", tempDirPath))
-	result := shared.RunShellCommand(cmd)
-	if result.ExitCode != 0 {
+	runningHelpProgram = exec.Command("soffice", "--show", path, "--nologo", "--norestore", fmt.Sprintf("-env:UserInstallation=file:///%s", tempDirPath))
+	result := shared.RunShellCommand(runningHelpProgram)
+	killedByParent := -1
+	if result.ExitCode != 0 && result.ExitCode != killedByParent {
 		return errors.New(result.Stderr)
 	}
 	return nil
 }
 
+func OpenPDF(path string) error {
+	runningHelpProgram = exec.Command("xreader", path, "--presentation")
+	result := shared.RunShellCommandNonBlocking(runningHelpProgram)
+	killedByParent := -1
+	if result.ExitCode != 0 && result.ExitCode != killedByParent {
+		return fmt.Errorf("could not open pdf: %s (%d)", result.Stderr, result.ExitCode)
+	}
+	return nil
+}
+
 type KeyAction int
 
 const (
@@ -154,3 +167,11 @@ func ResolveStorageFilePath(pathParam string) (string, bool, error) {
 
 	return fullPath, true, nil
 }
+
+func CloseRunningProgram() error {
+	if runningHelpProgram == nil {
+		return nil
+	}
+	err := runningHelpProgram.Process.Kill()
+	return err
+}